Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite
文献类型：期刊论文
| 作者 | Mokdad, F. ; Chen, D. L. ; Liu, Z. Y. ; Ni, D. R. ; Xiao, B. L. ; Ma, Z. Y. |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2017-05-17 |
| 卷号 | 695页码:322-331 |
| ISSN号 | 0921-5093 |
| 关键词 | Hot deformation Metal matrix nanocomposite Carbon nanotube Activation energy |
| 通讯作者 | Chen, DL (reprint author), Ryerson Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada. ; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China. |
| 中文摘要 | Hot deformation behavior of a 2.0 wt% CNT/2024Al nanocomposite was studied via high-temperature compression over a temperature and strain rate range of 200-400 degrees C and 0.001-0.1 s(-1), respectively. Both flow stress and Zener-Hollomon parameter increased with decreasing deformation temperature and increasing strain rate. The addition of CNTs led to a significant increase of activation energy of plastic deformation, corroborating the enhanced resistance of the nanocomposite to hot deformation. This was also reflected by the increased compressive yield strength in the nanocomposite due to both Hall-fetch strengthening and effective load transfer of CNTs dispersed in the matrix with well-bonded interfaces. Detailed microstructural examinations at a high strain rate, within the upper and lower temperature limits, revealed the occurrence of second-phase particle shearing, refinement, re-precipitation, and re-orientation. The highly beneficial role of the CNT reinforcement in improving the high-temperature performance of Al alloys was discussed. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 资助信息 | Natural Sciences and Engineering Research Council of Canada (NSERC); National Basic Research Program of China [2011CB932603, 2012CB619600]; CAS/SAFEA International Partnership Program for Creative Research Teams; Premier's Research Excellence Award (PREA); NSERC-Discovery Accelerator Supplement (DAS) Award; Canada Foundation for Innovation (CFI); Ryerson Research Chair (RRC) program |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78132]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Mokdad, F.,Chen, D. L.,Liu, Z. Y.,et al. Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,695:322-331. |
| APA | Mokdad, F.,Chen, D. L.,Liu, Z. Y.,Ni, D. R.,Xiao, B. L.,&Ma, Z. Y..(2017).Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,695,322-331. |
| MLA | Mokdad, F.,et al."Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 695(2017):322-331. |
入库方式： OAI收割
来源：金属研究所
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